Numbers 4:2-4

2“Take a 1census of the 2descendants of Kohath from among the sons of Levi, by their families, by their fathers’ households, 3from 3thirty years old and upward, even to fifty years old, everyone who can enter the service of ministry to do work in the tent of meeting. 4This is the work of the 4descendants of Kohath in the tent of meeting, concerning the most holy things.